With the enormous increase in interest, also the number of hackers and malicious software has increased. Keep a moment to get yourself familiar with security measurements to make sure your bitcoin are safe.
Hardware Wallet
The best way as an individual to store your Cryptocurrencies is most likely on a Hardware Wallet. You get the safety from cold storage with the convenience of an online wallet.
Right now the two most popular products are the Ledger Nano S and the TREZOR, each which their own advantages and disadvantages but both of them are excellent products. You can find a comparison between Ledger and TREZOR.
If you a decent amount of Crypto; don't wait for it to go wrong but take steps BEFORE it goes wrong. Store your currencies safely on a hardware wallet.